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Finding the Fourth Proportional to 54,907.80, 82,361.70 and 48,128.10

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Solution

The fourth proportional to 54,907.80, 82,361.70 and 48,128.10 is: 72,192.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,907.80 : 82,361.70 = 48,128.10 : x
  2. Step 2: Convert to fraction form
    54,907.80/82,361.70 = 48,128.10/x
  3. Step 3: Cross multiply
    54,907.80x = 82,361.70 × 48,128.10
  4. Step 4: Simplify right side
    54,907.80x = 3,963,912,133.77
  5. Step 5: Solve for x
    x = 3,963,912,133.77/54,907.80
  6. Step 6: Final answer
    x = 72,192.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.